Figure 2. A simple sine wave with a period of 360° and an amplitude of 1. In single phase power the x-intercepts are 180° from each other. A full period is 360°. A single phase motor has a crest approximately every 16.5 milliseconds giving the motors a tendency to vibrate more, which may contribute to a shortened bearing life.
Well Pump Installation
Super T Series® Engine Driven
Figure 1. The general arrangement of a three phase waveform.
Schlumberger Pump Assembly
Bowl wear ring
National Pump Vertical Turbine Pumps, API 610
Close-Coupled Vertical Turbine
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Impeller wear ring
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Vertical Lathe
Horizontal Lathe
Impeller wear ring
Vertical Turbine Pumps, Deep Well
Horizontal Lathe
Model 342A Single Stage End Suction
SF Series®
Utah Lake Cascade Pump
Model 411 Horizontal Split Case
Custom fabrication to a large part
Frame-mount Centrifugal Pumps
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Vertical Lathe
Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2π/3 radians or 120°. When one phase reaches an x-intercept or node the next phase is only 30° and approximately 5.6 milliseconds from reaching its crest.
